Rev. E
Reelmaster 6500-D/6700-DPage 7 - 18Cutting Units
Bedknife Replacement and Regrinding
1. Remove bedbar from cutting unit.
2. Use bedknife screw tool TOR510880 to remove bed-
knife screws. Remove bedknife (Fig. 27).
3. Removeallrust,scaleandcorrosionfrombedbarsur-
face before installing new bedknife.
4. Install new bedknife:
A. Make sure bedbar threads are clean. If neces-
sary, use 5/16--18 UNC 2A tap to clean threads.
B. Use new screws. Apply anti-seize lubricant to
screw threads before installing.
C. Tighten screws to a torque of 250 - 300 in.lb. (28 -
34 Nm) working from the center toward each end of
the bedbar. DO NOT use an impact wrench.
5. Since there can be variations inthe mountingsurface
of the bedbar, a new bedknife will notbe perfectly flat af-
ter it is installed. Becauseof this, it isnecessary to back-
lap or grind a new bedknife after installing it to the
bedbar. Follow the existing angle that was ground into
thebedknife and grind only enough to make sure the top
surface is true.
Regrinding Bedknife
Remove bedbar/bedknife assembly from cutting unit
before attempting to regrind a used bedknife. Keep the
bedknife fastened to the bedbar when grinding.
Note: When regrinding, be careful to not overheat the
bedknife. Remove small amounts of material with each
pass of the grinder.
Bedknife Regrinding Specifications (Figs. 28 and 29)
Bedknife
Relief Angle
(Range)
Front Angle*
(Range)
Highcut (Original) 5
o
5
o
Highcut (Later) 5
o
10
o
Lowcut 5
o
(3
o
-- 6
o
) 60
o
(55
o
-- 7 0
o
)
Lowcut (Extended) 10
o
(8
o
-- 11
o
) 60
o
(58
o
-- 6 4
o
)
*New Toro bedknives have a rounded front face and do
not require a specific front angle. Front angle specifica-
tions are listed for regrinding the bedknife front face at
customer’s option.
12468357
Use a torque
wrench and
bedknife screw tool
(TOR510880)
Figure 27
Relief Angle
Front Angle*
Top Face
Front
Face*
Figure 28
Figure 29
Highcut Bedknife (Original Design)
1.807” (45.9 mm)
Highcut Bedknife (Later Design)
1.815” (46.1 mm)
Lowcut Bedknife
1.845” (46.9 mm)
Lowcut Bedknife (Extended)
2.145” (54.5 mm)
